Flame lighter

ABSTRACT

A flame lighter has a blue flame burner and a luminous flame burner supplied with gaseous fuel from a reservoir through separate valves, and a single ignition mechanism. A first operation ignites the blue flame burner and a second operation opens the valve for the luminous flame burner so that the luminous flame is ignited from the heat of the blue flame burner, whenever a luminous flame is desired.

Conventional pocket or table flame lighters, which are used for lightingcigarettes and other smoking material, and for other purposes, such asfor lighting candles and for providing occasional illumination, have aburner which provides a low intensity, luminous flame of yellowishcolour and appreciable height, but subject to vagaries of local airdraughts and winds. Accordingly, a lighter with such a burner is moresuitable for use indoors and the willowy flame is aestheticallypleasing.

In recent years flame lighters have been developed with a "blue" flameburner, that is to say a burner which is supplied with gaseous fuel andan excess of air, so that the fuel burns, in the manner of a Bunsenburner, with a fierce, very hot, not very visible, flame, which isoften, but not necessarily, blue in colour, the flame impinging on anexposed glow element of metal, ceramic, or other suitable material, suchas a coil or grid, which is consequently rendered at least red hot. Suchlighters, which have been described as "flameless" or "turbo" lighters,find particular use as sports lighters out of doors, since the intenseflame ensures continuous burning, even in relatively high winds, andtotal windproofness due to re-ignition of the gaseous fuel, were itotherwise to be blown out by the wind, particularly if the glow elementis made of platinum, which provides a catalytic effect in initiatingre-ignition of the fuel gas. However, lighters with a blue flame burnerhave the disadvantage that the intense heat from the blue flame makes itdifficult for the user to hold the lighter with the flame burning formore than a quarter of a minute or so, and the absence of an elongateluminous flame, makes it difficult to use the lighter for ancillarypurposes, such as lighting candles, providing transient illumination, orlighting cigarettes for other people.

In accordance with the present invention, a flame lighter comprises acasing containing at least one reservoir for liquefied gaseous fuel; afirst, blue flame burner, which is arranged to be supplied with gaseousfuel from the, or one of the, reservoir(s) through a first valve; amanually operated ignition mechanism for igniting the fuel at the firstburner so that the fuel burns near to a glow element which is thusheated by the blue flame; and a second, luminous flame burner, which isarranged to be supplied with gaseous fuel from the, or another of the,reservoir(s) through a second valve; a nozzle of the second burner beingadjacent to the first burner so that the fuel at the second burner isignitable by heat generated at the first burner whenever the firstburner is burning and the second valve is open, and the first valve thenbeing closable when the second valve remains open so that only theluminous flame continues to burn. Preferably the lighter can be used inany one of three modes in which one or other, or both, of the burners isor are burning.

With this arrangement, the benefits of an indoor lighter, with aluminous flame burner, and of the outdoor lighter with a blue flameburner are simultaneously obtained with a single ignition mechanism. Inpractice the only duplication involves the use of a single second burnervalve and nozzle and the means to open the second burner valve, andthese are cheap components.

The essential difference between the first, blue flame burner, and thesecond, luminous flame burner, is that the respective air inlet whichprovides oxygen for nourishing the combustion of the fuel is arranged toprovide more air for the first burner than for the second burner,usually by throttling and accelerating the gas flow to the blue flameburner and using a venturi to draw in the air.

In practice, the first valve will be opened and the ignition mechanismoperated to ignite the blue flame, and if it is needed, the second valvewill be opened, before, substantially simultaneously with, or after,opening of the first valve, so that the yellow flame is ignited as aresult of its proximity to the blue flame and/or to the red hot glowelement. The arrangement is such that control of the fuel flow to theburners is such that after having been lit from the first burner theluminous flame at the second burner can continue to burn with the blueflame at the first burner extinguished. Thus the first valve is closablewith the second valve open so that only the luminous flame burns. But ifthe first valve is not closed, both flames may continue to burn, thusensuring reignition of the luminous flame by the first burner ifnecessary.

The first valve may be opened, for example, in conventional fashion byopening of a casing lid to expose externally visible parts of theburners. The ignition mechanism may then be operated by a first manuallyoperable actuating member, such as a depressible trigger which operatesa piezo-electric sparking mechanism. Alternatively, the first actuatingmember may move against spring action both to open the first valve andto operate the ignition mechanism, release of the first actuating membercausing closure of the first valve. The second valve may be operated bya second independently manually operable actuating member which must bedisplaced for the opening of the second valve.

There may be an impediment which prevents the second actuating memberfrom being displaced for opening of the second valve until theimpediment has been manually moved to a non-impeding position. Theimpediment may be, for example, a part which has to be moved to provideaccess to the second actuating member, or a safety interlock whichprevents opening of the second valve unless a lid has been opened orsome catch has been physically moved.

Most simply, the second actuating member is displaceable against springaction to open the second valve, and the second actuating member must bemanually held displaced to keep the second valve open.

Alternatively, the second actuating member may be retained automaticallyby interference means in its displaced position necessary for theopening of the second valve until positively released from the displacedposition. In one such construction, the second actuating member ismovable against spring action from a rest position to its displacedposition for the opening of the second valve, and when the secondactuating member reaches its displaced position an interlock elementforming the interference means is automatically movable under springaction to hold the second actuating member in its displaced position,the interlock element being manually movable against its spring actionto release the second actuating member and allow the second actuatingmember to return under its spring action to the rest position at whichthe second valve is always closed.

It is therefore apparent that the lighter may take various forms. Thus,the first and second actuating members may be adjacent to one another sothat the user's thumb or finger naturally actuates the first actuatingmember to ignite the blue flame, and then, optionally, rides onto thesecond actuating member to open the second valve and cause ignition ofthe luminous flame. At the same time the first actuating member may bereleased so that the first valve is closed and the blue flame isextinguished. Alternatively, if the first valve is opened by, forexample, opening a casing lid, the restraint maintaining the first valveopen may automatically be released, so that the first valve is closed,when the second actuating member is actuated to open the second valve.

In an alternative construction, the second actuating member, for openingthe second valve, may be remote from the first actuating member, whichcauses ignition of the blue flame, so that opening of the second valveto provide the fuel supply for the luminous flame requires a differentpositive movement to operate the second actuating member. In this case,the first actuating member may be a depressible plunger adjacent to thetop of the lighter and arranged to be actuated by the user's thumb,whereas the second actuating member may be a depressible button, aslide, or other part operable at a remote side of the casing by one ormore of the user's fingers. This construction has the advantage thatwhilst the luminous flame is kept alight the user's fingers can bepositioned far from the flame, making it ideal for the ancillarypurposes previously referred to.

In another construction, the second valve is opened by a secondactuating member, such as a button or slide, which may be positionalmost anywhere on the lighter, after a casing lid has been opened, thevalve being held open by a retaining element. Alternatively, actuationof the second actuating member may enable the lid to open the secondvalve when the lid is subsequently opened, the valve again being heldopen by a retaining element. In either case the blue flame, and hencethe luminous flame can then be ignited by actuating the first actuatingmember to open the first valve and operate the ignition mechanism.Release of the first actuating member will then close the first valveand extinguish the blue flame, leaving burning the luminous flame, whichmay subsequently be extinguished by closing the lid. This requirement issatisfied by a construction wherein the second actuating member ismovable to and from, and retainable in, its displaced positionindependently of the opening and closing of a hinged lid of the lighter,the second actuating member and the like both cooperating with thesecond valve such that the valve is only open whilst the secondactuating member is in its displaced position and the lid is open. Insuch an arrangement the lid and second actuating member may cooperatewith the second valve via a rocking lever, a mid portion of which isengagable with the second valve and the ends of which are respectivelyacted upon by the lid and second actuating member such that when a) thelid is open one end of the lever is constrained displaced in onedirection, when b) the second actuating member has been displaced theother end of the lever is constrained displayed in the one direction,and when both a) and b) obtain the lever is held bodily displaced in theone direction such that the mid portion holds the second valve open.

The interference means may be caused to release the second actuatingmember upon closing of the hinged lid of the lighter.

The invention can also be effected by a construction in which thelighter comprises a two stage manually operable actuating member, which,upon actuation in a first stage opens the first valve and operates theignition mechanism and, upon actuation in a second stage, opens thesecond valve and thereafter closes the first valve. In the first stage,the actuating member may move against a weaker spring to rock a firstlever to open the first valve and, in the second stage, move against astronger spring, to rock the and/or another lever to open the secondvalve and therafter to close the first valve.

With this arrangement the two stage movement is sensed by the use of thestronger and weaker springs, the manual force applied to the actuatingmember acting through the stronger spring to overcome the weaker springin the first stage movement, and, thereafter, overcoming the strongerspring during the second stage movement. For example, a conventionalpiezo-electric ignition mechanism with its usual spring loaded plungermay be covered by a cup with an interposed stronger return spring, thefirst stage movement of the actuating member causing the cup andstronger spring to depress the ignition mechanism plunger whilst thefirst lever is rocked to open the first valve. Thereafter, when thepiezo-electric ignition mechanism plunger has bottomed out, furthermovement of the actuating member overcomes the action of the strongerspring so that the cup moves relatively to the piezo-electric ignitionmechanism plunger and rocks a second lever which opens the second valve,the first lever simultaneously being released so that the first valve isreclosed under its own internal return spring mechanism. The two stagemovement may alternatively or additionally be sensed by an obstructionto the movement of the actuating member when the first stage has beencompleted, the obstruction being overridden when the second stagecommences.

The timing is preferably such that the first valve is closed just afterthe second valve is opened, so that ignition of the luminous flame willbe assisted by the temporary existence of the blue flame, and will notdepend alone on the heat from the glow element.

A cover for the first burner may be displaceable to reveal the firstburner, whilst the second burner has no cover at all and thus is alwaysexposed. Alternatively, a cover for the second burner is displaceable toreveal the second burner upon movement of the second actuating member toits displacement position, or upon movement of the impediment to itsnon-impeding position.

The second burner nozzle must be sufficiently adjacent to the firstburner so that the luminous flame is ignited by the heat from the firstburner. This may involve the second burner having a nozzle which directsthe gaseous fuel stream, when the second valve is opened, through,adjacent to the edge of, or above the glow element of the first burner.For example, the second burner nozzle may be alongside the first burnerand oriented to provide a gas flow in a direction inclined towards thegas flow of the first burner, i.e. over the glow element of the firstburner. Alternatively the first burner may have a burner ringsurrounding the glow element and the nozzle of the second burner extendsthrough the body of the ring at an edge of the glow element, or towithin the ring. The "adjacency" of the second burner to the firstburner should be construed to include all these arrangements.

Some examples of lighters constructed in accordance with the presentinvention are illustrated in the accompanying drawings, in which:

FIG. 1 is a diagrammatic perspective view of a first lighter;

FIG. 2 is a diagrammatic sectional front elevation of the first lighter;

FIG. 3 is a diagrammatic sectional side elevation of the first lighter;

FIG. 4 is a diagrammatic perspective view of a second lighter prior tooperation;

FIG. 5 is a view similar to FIG. 4 but showing the lighter in operation;

FIG. 6 is a diagrammatic sectional front elevation of the secondlighter;

FIG. 7 is a diagrammatic partly sectional front elevation of a thirdlighter;

FIGS. 8 and 9 are views similar to FIG. 7 but showing the lighter indifferent operational modes; and,

FIG. 10 is a diagrammatic sectional front elevation of a fourth lighter.

The first lighter, shown in FIGS. 1 to 3 has a casing 11 with a hingedlid 12, the casing containing a liquefied gaseous fuel reservoir 13having two outlets controlled by first and second valves 14 and 15. Thevalve 14 controls the flow of gaseous fuel through a conduit 16 in whichthe flow is throttled and accelerated so that an appreciable quantity ofcombustion air is drawn in through a venturi inlet 17, the mixtureflowing to a blue flame burner consisting of a ring 18 surrounding aglow element 19. The valve 15 controls the flow of gaseous fuel througha conduit 20 to a nozzle 21 of a luminous flame burner alongside or atleast partly within the blue flame burner. The valve 14 is adjusted inconventional manner by means of a member 22 accessible at the bottom ofthe casing 5, whereas the valve 15 is independently adjustable bymanipulation of a member 23, which is exposed through a front face ofthe casing. Alternatively the valve 15 could also be adjusted by meansof a member, like the member 22, at the bottom of the casing, as shownfor example in FIG. 7.

After opening the lid 12, to expose the burners, and with the casinggrasped in the palm of the hand, a trigger actuating member 24 isdepressible against spring action to operate a conventionalpiezo-electric ignition mechanism 25 to discharge a spark at anelectrode 26 adjacent to the blue flame burner. Simultaneously,depression of the trigger 24 rocks a lever 27, which opens the valve 14and provides a gas air mixture at the blue flame burner, which isignited by the spark. The fierce flame quickly heats the glow element 19to red heat.

Thereafter a luminous flame 28 may be ignited at the nozzle 21 bydepressing against spring action, for example with the middle finger ofthe hand grasping the lighter, a button 29 which is exposed in a sidewall of the casing, and which forms a second actuating member.Depression of the button causes a lever 30 to be rocked counterclockwiseas seen in FIG. 2, thereby opening the valve 15 and allowing thedischarge of gaseous fuel to the nozzle 21. The fuel mixed withentrained air is quickly ignited by the blue flame and/or the glowelement 19 at the blue flame burner.

Thereafter the blue flame may be extinguished by releasing the trigger24, so that the valve 14 is closed under its own internal spring action.The luminous flame 28 then continues to burn for as long as the button29 is held depressed, but release of the button causes the valve 15 tobe closed under its own internal return spring action, therebyextinguishing the luminous flame as well.

In FIG. 2, the nozzle 21 is shown in full lines alongside and inclinedtowards the blue flame burner. There is also shown in FIG. 2 in chaindotted lines, a modification of the conduit 20, which is cranked so thatthe nozzle 21 extends into a hole 21' (ssen in FIG. 1) in the body ofthe ring 187, and the fuel discharged from this nozzle is even closer tothe blue flame burner and will be more readily ignited to form the flameshown at 28' and in FIG. 1. In a further modification, the conduit 20 iscranked to a greater extent so that the nozzle 21 actually liessubstantially concentrically within the ring 18 and glow element 19,improving even further the ignition of the flame 28 by the blue flameburner, and producing a central luminous flame 28" as shown in FIG. 1.

In the second lighter, shown in FIGS. 4 to 6, parts of analogousconstruction and function to parts of the first lighter are given thesame reference numerals with the postscript A.

The second lighter differs from the first in that the nozzle 21A of theluminous flame burner is always exposed in an aperture 34 in the top ofthe casing and the lid 12 and trigger 24 are replaced by a rotary slideaction combined cover and actuator 24A, having legs which are pivoted at35 relatively to the casing. Thus when the actuator 24A is swungoutwards by applying thumb pressure, as shown in FIG. 5, a roller 36runs onto the top of the plunger of the piezo-electric ignitionmechanism 25A to cause the discharge of an ignition spark adjacent tothe blue flame burner, and simultaneously rocks a lever 27A to open thefirst valve 14A. The blue flame continues to burn while the actuator 24Ais held in the outward position. A luminous flame is ignited at thenozzle 21A by inward depression against spring action of a leveractuator 29A so that the valve 15A is opened and fuel is discharged fromthe nozzle 21A adjacent to the blue flame burner. However, there is asliding interlock element 37, which is exposed in the front face of thecasing 11A. In the raised position shown in FIG. 6, it impedes, withinthe casing, the lower end of the lever 29A, so that the lever cannot bedepressed. Depression of this lever is only possible after the elementhas been slid down to a release position shown in FIGS. 4 and 5.

The third lighter is shown in FIGS. 7 to 9 and parts with analogousconstruction and function to parts of the first two lighters will begiven the same reference numerals with the postscript B.

As with the first lighter, with the lid 12B raised, the blue flameburner may be actuated by depressing the trigger actuator 24B, tooperate a piezo-electric ignition mechanism 25B so that a spark isdischarged at an electrode 26B. At the same time, depression of thetrigger rocks a lever 27B, which opens a valve, which is not visible butis similar to the valves 14, 14A so that a fuel/air mixture isdischarged to ignite the blue flame in the burner ring 18B, and hencecausing the element 19B to glow. The blue flame burner continues burningwhile the trigger 24B is held depressed and the burner valve held open.When the trigger is released the valve closes under its own internalreturn spring action and extinguishes blue flame and glowing element.

In this lighter the valve 15B for the luminous flame burner is opened bythe joint action of opening the lid 12B and sliding upwards afingerpiece 38, which is exposed in an opening in the front surface ofthe casing 11B. The fingerpiece 38 has an upstanding nose 39 which isengagable with the right-hand end of a lever 40, the other end of whichis pivoted at 41 to a vertically slidable sub frame 42 having at itsupper end a cross pin 43, which is engagable by a curved edge of adepending leg 44 of the lid 12B. A mid portion of the lever 40 isbifurcated and engages both sides of a flange on the valve 15B, thevalve being opened when the flange is lifted. The arrangement here isthat when the lid 12B is opened, the leg 44 engages the pin 43 andraises the sub frame 42 and with it the pivot 41 and respective end ofthe lever 40. This in itself is insufficient to raise the flange of thevalve 15B and open the valve, unless the fingerpiece 38 has also beenraised from its lowered position shown in FIGS. 7 and 8 to its raisedposition shown in FIG. 9. In this case, both ends of the lever 14 havebeen lifted and the valve will be opened. The sequence of events isimmaterial as the valve will be opened irrespective of whether the lid12B is first opened and then the fingerpiece 38 raised, or vice verse.When the fingerpiece 38 is raised, against the action of a spring 45, abar like interlock element 46 is automatically slid towards the left asshown in the Figures, under the action of a spring 47, until a shoulderon the bar element lodges beneath the fingerpiece 38, and holds it inits raised position. At this time the left-hand end of the bar element46, as seen in the Figures, projects outwardly of the edge of the casing11B. The fingerpiece is thus held in its raised position unless the barelement 46 is manually pressed back into the casing, for example, bythumb pressure applied to its free end, against the action of the spring47, so that the fingerpiece 38 then freed and forced to its loweredposition by its spring 45. In this way, the lighter can be cocked readyfor luminous flame operation by leaving the fingerpiece 38 in its raisedposition. Opening of the lid will then release gaseous fuel from thenozzle 20B and ignition of the blue flame burner by depression of thetrigger 24B will immediately light both flames. The luminous flame canthen be left burning after releasing the trigger 24B and extinguishingthe blue flame, or the luminous flame could be extinguished by loweringthe fingerpiece 38 and keeping the trigger 24B depressed. Theconstruction therefore provides a very sophisticated and versatilemanner of operation.

FIG. 10 illustrates the fourth lighter and parts with analogousconstruction and function to parts of the earlier examples are given thesame reference numerals with the postscript C.

The fourth lighter is similar to the second lighter in having a rotaryslide action cover and actuator 2 C which has a depending portionpivoted relatively to the casing at 35C. The depending portion carries aroller 36C and first and second cam surfaces 48 and 49. The roller 36Cbears on top of an inverted cup 50, which houses a compression spring 51bearing on top of the plunger 52 of a piezo-electric ignition mechanism25C.

Upon first stage clockwise movement of the actuator 24C, the cam surface49 engages the adjacent end of a lever 27C, so that its other end 53rises and opens the valve 14C for the blue flame burner, whereupongaseous fuel is released to the burner defined by the ring 18C and glowelement 19C, which are then exposed. Simultaneously, the roller 36Cdepresses the cup 50 and, as the spring 51 is stronger than a returnspring at 54 for the plunge 52, the plunger 52 is depressed to operatethe ignition mechanism, which causes an ignition spark to be dischargedat the conventional electrode adjacent to the glow element 19C to ignitea blue flame. This first stage movement of the actuator 24C is felt tobe terminated when the plunger 52 bottoms out. Thereafter, an additionalforce applied to the actuator 24C, rotates the actuator further in theclockwise direction about the pivot 35C, to overcome the strength ofspring 51 and to depress the cup 50 further over the plunger 52. Thismovement causes the cam surface 48 to engage an end 55 of a lever 56,which is pivoted at 57, so that an end 58 of the lever is raised andopens a valve 15C for the luminous flame burner, whereupon gaseous fuelis discharged through the conduit 20C to the nozzle 21C adjacent to theblue flame burner. Gas discharged from the nozzle 21C is then ignited bythe heat from the element 19C and burns as a luminous flame.

During the second stage movement of the actuator 24C the cam surface 49rides off the upwardly convex portion of the lever 27C so that the leveris no longer able to hold the valve 14C open against its own internalreturn spring, and the valve is closed, thus discontinuing the flow ofgaseous fuel to the glow element 19C. This leaves only the luminousflame from the nozzle 21C burning. This luminous flame is subsequentlyextinguished when the actuator 24C is released so that the parts returnto the rest position under the action of the return spring 51, thereturn spring 54 acting on the plunger 52, and the return spring in thevalve 15C.

I claim:
 1. A flame lighter comprising: a casing containing at least onereservoir for liquefied gaseous fuel; a first, blue flame burner, whichis arranged to be supplied with gaseous fuel from the, or one of the,reservoir(s) through a first valve; a manually operated ignitionmechanism for igniting the fuel at the first burner so that the fuelburns near to a glow element which is thus heated by the blue flame; anda second, luminous flame burner, which is arranged to be supplied withgaseous fuel from the, or another of the, reservoir(s) through a secondvalve; a nozzle of the second burner being adjacent to the glow elementof the first burner so that the fuel at the second burner is ignitableby heat generated at the first burner whenever the first burner isburning and the second valve is open, and means for closing the firstvalve while the second valve remains open so that only the luminousflame continues to burn.
 2. A flame lighter according to claim 1,including means wherein the lighter can be used in any one of threemodes in which one or the other, or both, of the burners is or areburning.
 3. A lighter according to claim 1 or claim 2, comprising afirst manually operable actuating member which operates the ignitionmechanism, and means including a second independently manually operableactuating member which must be displaced for the opening of the secondvalve.
 4. A lighter according to claim 3, including means wherein thefirst actuating member moves against spring action both to open thefirst valve and to operate the ignition mechanism, release of the firstactuating member causing closure of the first valve.
 5. A lighteraccording to claim 3, wherein there is an impediment which prevents thesecond actuating member from being displaced for opening of the secondvalve until the impediment has been manually moved to a non-impedingposition.
 6. A lighter according to claim 3, in which the secondactuating member is displaceable against spring action to open thesecond valve, and the second actuating member must be manually helddisplaced to keep the second valve open.
 7. A lighter according to claim3, wherein the second actuating member is retained automatically byinterference means in its displaced position necessary for the openingof the second valve until positively released from the displacedposition.
 8. A lighter according to claim 7, wherein the secondactuating member is movable against spring action from a rest positionto its displaced position for the opening of the second valve, and whenthe second actuating member reaches its displaced position an interlockelement forming the interference means is automatically movable underspring action to hold the second actuating member in its displacedposition, the interlock element being manually movable against itsspring action to release the second actuating member and allow thesecond actuating member to return under its spring action to the restposition at which the second valve is always closed.
 9. A lighteraccording to claim 7, wherein the second actuating member includes meanswherein it is movable to and from, and retainable in, its displacedposition independently of the opening and closing of a hinged lid of thelighter, the second actuating member and the lid both including meanscooperating with the second valve such that the valve is only open whilethe second actuating member is in its displaced position and the lid isopen.
 10. A lighter according to claim 9, wherein the lid and secondactuating member include means to cooperate with the second valve via arocking lever, a mid portion of which is engagable with the second valveand the ends of which are respectively acted upon by means cooperatingwith the lid and the second actuating member such that when a) the lidis open one end of the lever is constrained displaced in one direction,when b) the second actuating member has been displaced the other end ofthe lever constrained displaced in the one direction, and when bothcondition a) and b) exist the lever is held bodily displaced in the onedirection such that the mid portion holds the second valve open.
 11. Alighter according to claim 7, wherein the interference means is coupledwith means to release the second actuating member upon closing of ahinged lid of the lighter.
 12. A lighter according to claim 1,comprising a two stage manually operable actuating member includingmeans, which, upon actuation in a first stage opens the first valve andoperates the ignition mechanism and, upon actuation in a second stage,opens the second valve and thereafter closes the first valve.
 13. Alighter according to claim 12, wherein the actuating member, in thefirst stage, moves against a weaker spring to rock a first lever to openthe first valve and, in the second stage, moves against a strongerspring, to rock the and/or another lever to open the second valve andthereafter to close the first valve.
 14. A lighter according to claim 3,wherein a cover for the first burner is displaceable to reveal the firstburner, while the second burner has no cover at all and thus is alwaysexposed.
 15. A lighter according to claim 3, wherein a cover for thesecond burner is displaceable to reveal the second burner upon movementof the second actuating member to its displaced position, or uponmovement of the impediment to its non-impeding position.
 16. A lighteraccording to claim 1, wherein a nozzle of the second burner is alongsidethe first burner and oriented to provide a gas flow in a directioninclined towards the gas flow of the first burner.
 17. A lighteraccording to claim 1, wherein the first burner has a burner ringsurrounding the glow element and the nozzle of the second burner extendsthrough the body of the ring at an edge of the glow element.
 18. Alighter according to claim 1, wherein the first burner has a burner ringsurrounding the glow element and the nozzle of the second burner extendsto within the ring.
 19. A lighter according to claim 1, wherein the twovalves, and hence the blue and luminous flames, are independentlyadjustable.